theres none that bolt up to the zx2 that have a lsd in there alreay, but if you're looking for something that has a stronger differential, the 2001-2003 ford escape 2wd w/ 4 cyl model has a 4 spider diff and a closed housing vs the zx2's 2 spider diff and open housing. It also bolts up to a zx2 motor and will accept all the zx2 trans mounts, reverse light switch, and zx2 clutch (make sure you use the zx2 clutch t/o bearing fork).

heres a list of the tranny's that will bolt into your zx2 with a minimum of fuss...